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ll_rw_blk: add io_context private pointer

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To be used by as/cfq as they see fit.

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
This commit is contained in:
Jens Axboe 2007-04-24 21:17:33 +02:00 committed by Jens Axboe
parent 91fac317a3
commit 4e521c27ee
2 changed files with 2 additions and 0 deletions
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1
block/ll_rw_blk.c
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@ -3741,6 +3741,7 @@ static struct io_context *current_io_context(gfp_t gfp_flags, int node)
ret->nr_batch_requests = 0; /* because this is 0 */
ret->aic = NULL;
ret->cic_root.rb_node = NULL;
ret->ioc_data = NULL;
/* make sure set_task_ioprio() sees the settings above */
smp_wmb();
tsk->io_context = ret;

1
include/linux/blkdev.h
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@ -116,6 +116,7 @@ struct io_context {
struct as_io_context *aic;
struct rb_root cic_root;
void *ioc_data;
};
void put_io_context(struct io_context *ioc);